package br.com.sistema.util;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.hibernate.SessionFactory;

import br.com.sistema.vendas.HibernateUtil;

public class ConexaoHibernateFilter implements Filter{

	private SessionFactory sf;
	
	@Override
	public void destroy() {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		try {
			this.sf.getCurrentSession().beginTransaction();
			chain.doFilter(request, response);
			this.sf.getCurrentSession().getTransaction().commit();
			this.sf.getCurrentSession().close();
	
		} catch (Throwable e) {
			
				try {
					if(this.sf.getCurrentSession().getTransaction().isActive()) {
						this.sf.getCurrentSession().getTransaction().rollback();
					}
					
				} catch (Exception e2) {
					e2.printStackTrace();
				}
				throw new ServletException();
		}
		
		
	}

	@Override
	public void init(FilterConfig conf) throws ServletException {

		this.sf = HibernateUtil.getSession();
		
	}

}
